'Four' in the Bible

And four men came to him with one on a bed who had no power of moving.

And there were about four thousand people: and he sent them away.

And when the seven among the four thousand, what number of baskets full of broken bits did you take up? And they said to him, Seven.

And then he will send out the angels, and will get together his saints from the four winds, from the farthest part of the earth to the farthest part of heaven.